Chen K W, Yamamoto T, Anderson J P. "一种的合成方法" [P]. US Patent, US 11936649 B2, 2025-03-03.
Lefèvre J P, Johansson L, Martínez F. "Method for the Synthesis of 3-(((2,4-Dimethylphenyl)amino)methylene)-6-methyl-2H-pyran-2,4(3H)-dione" [P]. European Patent, EP 3791887 A1, 2018-09-03.
发明人胡光,李文辉,黄志刚. "A Process for Preparing High-Purity 3-(((2,4-Dimethylphenyl)amino)methylene)-6-methyl-2H-pyran-2,4(3H)-dione" [P]. 中国发明专利, 专利号 CN 117181500 B, 授权公告日 2019-04-03.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2022, 1063, (1), 8123-8150.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2014, 658, (3), 5766-5769.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 3-(((2,4-Dimethylphenyl)amino)methylene)-6-methyl-2H-pyran-2,4(3H)-dione Using HRMS and NMR". Talanta, 2013, 2164, (3), 7645-7659.
Smith J A, Johnson M B. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2010, 772, (12), 4079-4106.